!:folding=indent:collapseFolds=1:

! $Id$
!
! Copyright (C) 2004 Slava Pestov.
! 
! Redistribution and use in source and binary forms, with or without
! modification, are permitted provided that the following conditions are met:
! 
! 1. Redistributions of source code must retain the above copyright notice,
!    this list of conditions and the following disclaimer.
! 
! 2. Redistributions in binary form must reproduce the above copyright notice,
!    this list of conditions and the following disclaimer in the documentation
!    and/or other materials provided with the distribution.
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! THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
! INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
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! PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
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IN: parser
USE: arithmetic
USE: combinators
USE: errors
USE: lists
USE: namespaces
USE: stack
USE: stdio
USE: streams

: next-line ( -- str )
    "parse-stream" get freadln
    "line-number" succ@ ;

: (parse-stream) ( -- )
    next-line [ (parse) (parse-stream) ] when* ;

: <parse-stream ( name stream -- )
    "parse-stream" set
    "parse-name" set
    0 "line-number" set ;

: parse-stream ( name stream -- )
    <namespace> [
        [
            <parse-stream f (parse-stream) nreverse
        ] [
            "parse-stream" get fclose rethrow
        ] catch
    ] bind ;

: parse-file ( file -- code )
    dup "r" <file-stream> parse-stream ;

: run-file ( file -- )
    parse-file call ;